47188969 has 2 divisors, whose sum is σ = 47188970. Its totient is φ = 47188968.

The previous prime is 47188961. The next prime is 47188997. The reversal of 47188969 is 96988174.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42510400 + 4678569 = 6520^2 + 2163^2 .

It is a cyclic number.

It is not a de Polignac number, because 47188969 - 2³ = 47188961 is a prime.

It is a super-2 number, since 2×47188969² = 4453597590565922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47188961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23594484 + 23594485.

It is an arithmetic number, because the mean of its divisors is an integer number (23594485).

Almost surely, 2^47188969 is an apocalyptic number.

It is an amenable number.

47188969 is a deficient number, since it is larger than the sum of its proper divisors (1).

47188969 is an equidigital number, since it uses as much as digits as its factorization.

47188969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 47188969 is about 6869.4227559526. The cubic root of 47188969 is about 361.3656181769.

The spelling of 47188969 in words is "forty-seven million, one hundred eighty-eight thousand, nine hundred sixty-nine".